import time
import numpy as np

# t1 = time.time()
# a = []
# for x in range(100000):
#     a.append(x**2)
# t2 = time.time()
# print(t2 - t1)

a1 = np.array([1,2,3])
print(a1.ndim)
a2 = np.array([[1,2,3],[4,5,6]])
print(a2.ndim)

